Search Engine-Compressor Fault
The most expensive service item for domestic refrigerator is the replacement of the compressor. The technician should check carefully all other electrical and mechanical failures, before determining that needs replacement of the compressor. When the motor-compressor is in good condition, the most common reason for replacing faulty wiring.
Other electrical problems are often misleading technician, thinking the motor-compressor is to blame. To verify this, cleanse the outside of the compressor dome. Then remove the cover on the electrical connections. Turn off the system wiring from the compressor relays, capacitors, overload, and all. Use an ohmmeter to check the motor windings for continuity, shorts and a garden. If the unit checks properly connect the starting circuit of the electric motor of the compressor. Use the correct size capacitors and overload switch.
If the system starts and works correctly with this guide to begin the electrical connections, the problem is in the external system (This can be in the wiring, thermostat, or overload relay.) If an internal electric motor defective motor of the compressor must be replaced.
If the electrical system is functioning normally, the compressor cannot be pumping.
The best test of the engine compressor is volt-amperes (watts) at normal reading the low side and the high pressure side. If the volt-ampere read below the motor nameplate, the pump can be worn out. To check the compressor is pumped opportunities, establish a piercing valve and manifold. Then, pinch the suction line. Next, run the device to determine how much emptiness, he will pull through. (It should pull between 25" Hg and 28" Hg [7 kPa and 17 kPaJ vacuum.) Stop the compressor. Vacuum indicated when it moves in the direction of the 20" Hg (34 kPa), then to 10" Hg (68 kPa). The weakening of the vacuum specifies the exhaust valves of the compressor leakage. The compressor motor must be replaced or repaired.
Another method is to set piercing valve on the process tube. Then, connect one end of the flexible Saint-ice line adapter for the valve. Connect the other end of the connection line to the sensor end of the manifold. To clear these lines to clear them. Then, pinch suction line to run the device. Motor compressor must pull 16" Hg vacuum (47 kPa) for about two minutes. (Do not run longer without cool suction steam flows. Motor overheats.) Stopping the compressor and observe. If low pressure is increased, compressor valves leak...
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Industrial